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OHA Drinking Water Services Contact Report Details
PWS ID:	OR41 00591
PWS Name:	SOUTH FORK WATER BOARD

Who Was Contacted and Phone:	Dave Mustonen (503) 872-4699
Contact Date:	04/22/2008
Contacted By:	FARRELLY, PETER (DWP)
Contact Method/Location:	Office

Assistance Type:	OTHER REGULATORY - REGULATORY ASSISTANCE
Reasons:	Lead or Copper Operations

Details:	SUMMARY: Update on the Corrosion Control Plan DETAILS: The plan to gradually change the water character (explained in previous CR, and in Septembers Corrosion Control Plan Report), had some recent discouraging results. In their 2nd round of non-compliance sampling, they exceeded the lead action level. They began gradually, incrementally increasing soda ash dosing after installation of a new soda ash feeder around November. Current alkalinity concentration is slightly higher than before at 25 mg/L. Hearsay & conjecture has it that springtime Clackamas River flows have lower alkalinity or some other characteristic than increases corrosion. Perhaps there is some unknown-as-of-yet reason for it. ACTION NEEDED: * Stay the course. Do not change the soda dosing, for now. * SFWB will write up report on how the plan was implemented since October 2007, including dosing rates and dates, and sampling parameters and dates. * Dave or Kim will send Pete a finished draft in 2 weeks (Tuesday May 6th) * We will evaluate the plan and the future course then.